Long Ago and Far Away....
But seriously, it is interesting how the houses are all on the diagonal with all the entrances oriented in the same direction. Weird!
Winter time warmth and light into the middle of the house: They all face the directly into the sunlight.
Obviously they were worshiping Cthulhu and expected him to pop up from that direction after they sacrificed all those people.
Not really, I don’t think. Could about where the sun is (doors facing away for heat of the day) . Or the direction of prevailing winds (doors facing away from the wind).
Though Mr. Civ might be able to shed a lot more light on the question
based on shadows in photo the entrances are facing south to get the most warmth/solar exposure.
Look at the shadows from the trees. The sunlight would have shown directly into the entrances.